SIEMENS AC Motors

Siemens Motors SIMOTICS Motors 1LE0 series motors are all-purpose closed fan-cooled three-phase asynchronous motors with IP55 degree of protection. The design and manufacture of 1LE0 series motors meet the requirements of ISO, IEC, GB, and other relevant standards.

1LE0 series motors are suitable for continuous use within a specified speed range (S1), constant speed or variable frequency speed control applications. Explosion hazards are always present in many industries and in the public sector, such as the chemical industry, refineries, drilling platforms, gas stations, feed manufacturing, and sewage treatment plants. When explosive gases, smoke, fumes, dust mix with oxygen in the air in explosive proportions, there is a risk of explosion if there is an ignition source close to the ignition source that is capable of the lowest ignition energy known to release. Especially in the chemical and petrochemical industries, explosions can occur when transporting crude oil or natural gas, or during mining or crushing (such as grain or solid particles), causing serious personal injury. or equipment damage. To ensure safety in these areas, legislators in most countries have enacted and implemented appropriate provisions in the form of laws and regulations based on national and international standards. Explosion-proof equipment is designed to prevent explosions if the equipment is used properly. Explosion-proof equipment can be designed according to different types of protection. The area of use must be divided by the user into designated areas with the support of the competent authority, according to the frequency of explosive risks. Each area has a corresponding equipment or device. Next, analyze the type of protection required for these areas and select the corresponding type of equipment (product).

Technical characteristics of Siemens 1LE0 series motors
■ Base material: gray cast iron or aluminum alloy.
■ Standard colour: Stone gray (RAL 7030).
■ Rated power: 0.55kW to 315kW (50Hz)
■ 2-pole, 4-pole, 6-pole, and 8-pole motors of 0.75kW or more comply with GB18613-2020 standard.
It can meet half energy efficiency level 3, IEC 60034-30 standard IE3 efficiency, etc.
Rate (50Hz);
■ Optimal compact structure.
■ Typical mounting structure type (according to IEC 60034-7 standard): IM B3, IM
B5, IM B35 etc.
■ All motors are designed with protection class IP55 (IEC 60034-5).
■ FS1) 280 to 355 are equipped with a refueling device as standard, and FS1) 100 to 250 are optional.
■ An improved cantilever force design is optional on motors in the FS 100-355 range.
■ Motor can choose PTC or PT100 or PT1000 thermostat for winding protection
The normal location of the terminal box is at the top of the frame, and the cable entry port is on the right side (when viewed from the drive side).
), the position of the junction box and the direction of the input wire can be optionally changed.
■ Insulation system according to 155 (
F) Temperature rating design, power rating and direct power supply
130 (
B) Use of temperature scales.
■ The standard motor cooling method is self-following cooling (IC 411 specified in IEC 60034-6).
An independent drive fan can provide critical cooling.
■ FS 80 cast iron motor has no ring. FS 90-355 has two rings. aluminum
Housing motor FS 80 to 90 without rings, FS 100 to 160 with 2 rings,
The structure of the lifting ring is cast and integrated into the base of the machine.

Operating environment
■ Protection class IP55 (IEC 60034-5).
■ Altitude not exceeding 1000 m above sea level (IEC 60034-1).
■ The permitted ambient temperature is -20 °C to 40 °C (IEC 60034-1).
■ Allowable relative humidity:
• -20 ℃ ≤ T ≤ 20 ℃: 100%
• 20 ℃ < T ≤ 30 ℃: 95%
• 30°C < T ≤ 40°C: 55%
At high ambient temperatures or above 1000 m above sea level,
kHT is the rated power conversion factor of the motor. Allowable power value (Padm)